dcdcbee43842a2b872e14131b9e99ae69faa3853cdee24ffbf62d0a6fc4eaef7

Analysis

max time kernel
144s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
29/12/2023, 22:39

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General

Target

05db5873ac698ff744b9378fc176fed2.dll
Size

231KB
MD5

05db5873ac698ff744b9378fc176fed2
SHA1

bd405be67ce5006d4dffa957d90f0303c65cc795
SHA256

dcdcbee43842a2b872e14131b9e99ae69faa3853cdee24ffbf62d0a6fc4eaef7
SHA512

c872016fc1e36ddddacf53f1a2a59e75aa2b4c99e20f09965f58379e07d5732023f552727a1973167a789def0ad283fc537f46958b7cc74340fdced114a73174
SSDEEP

3072:zysX0WxnWd/IkmL+PViEbmzwtz/wk8YWbH:mskd/IkmuVfyWdMH

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\aqrjd = "{62dd79e7-ea55-3faa-fb66-ea55f16f7df5}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1592	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ndewq.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\ndewq.dll	rundll32.exe
File created	C:\Windows\SysWOW64\vlmey.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\vlmey.dll	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{62dd79e7-ea55-3faa-fb66-ea55f16f7df5}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{62dd79e7-ea55-3faa-fb66-ea55f16f7df5}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{62dd79e7-ea55-3faa-fb66-ea55f16f7df5}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{62dd79e7-ea55-3faa-fb66-ea55f16f7df5}\InprocServer32\ = "C:\\Windows\\SysWow64\\vlmey.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{62dd79e7-ea55-3faa-fb66-ea55f16f7df5}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1592	rundll32.exe
1592	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1592	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1592	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4492 wrote to memory of 1592	4492	rundll32.exe	14
PID 4492 wrote to memory of 1592	4492	rundll32.exe	14
PID 4492 wrote to memory of 1592	4492	rundll32.exe	14

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\05db5873ac698ff744b9378fc176fed2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\05db5873ac698ff744b9378fc176fed2.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1592

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\ndewq.dll

Filesize
225B

MD5
c729acf69a86e0d1c950f519caf5073c

SHA1
92963c6862b3613f4a5c8a31a1d525383ee303e8

SHA256
2528cd14de6df207915efb47550d3dc97f62e6fde60d72bcce895714ef78bacf

SHA512
08e981e5a9559f5476f26a6109c4e1ea3fa56d280b7254f03ddb40a2d79cce98d0c81689a8b0f94bc8555948bca8368ab280c23584ec2835fb5197c85712efac

Download Submit
C:\Windows\SysWOW64\ndewq.dll

Filesize
18KB

MD5
7df53153b1f0e2f4bc05535413d3e732

SHA1
3196ca4607126d7e834b894b97762d850498f16e

SHA256
88ee1c189e0d0655391f282f8ec7b6650d42797a991e6c5e3efe10ac83af4dd5

SHA512
e269508e78d6a296485614a7bd4f0fb73004102bf118fad9d137e4ba42d894a9ac0e0be78e197219ca982a33abe0f77ce3f619f1f7a8d8f25e567335dbf5aee4

Download Submit
memory/1592-8-0x00000000754A0000-0x000000007551A000-memory.dmp

Filesize
488KB

Download
memory/1592-1-0x0000000000690000-0x00000000006D3000-memory.dmp

Filesize
268KB

Download
memory/1592-0-0x0000000000690000-0x00000000006D3000-memory.dmp

Filesize
268KB

Download
memory/1592-12-0x00000000754A0000-0x000000007551A000-memory.dmp

Filesize
488KB

Download
memory/1592-11-0x0000000000690000-0x00000000006D3000-memory.dmp

Filesize
268KB

Download